/Engine/Source/Runtime/Slate/Public/Framework/Docking/LayoutService.h
Write the desiredFTextvalue into the desired section of a named config file. This function should only be used to save localization names (e.g., LayoutName, LayoutDescription). For saving theFTabManager::FLayout, check SaveToConfig.
static void SaveSectionToConfig ( const [FString](API\Runtime\Core\Containers\FString) & InConfigFileName, const [FString](API\Runtime\Core\Containers\FString) & InSectionName, const [FText](API\Runtime\Core\Internationalization\FText) & InSectionValue )